Dr. Tanja BosakAssociate Professor of Geobiology
Contact: tbosak[at]mit.edu Bosak CV
Stromatolites are the most ancient records of biosignatures on Earth. Understanding the different biogeochemical conditions that induce precipitation of carbonates and minerals in microbial mats is the key for a better reconstruction of the mechanisms of the formation of fossil stromatolites found in the geological records. I am interested in the investigation of the different microbial populations and metabolisms conducive to the formation of stromatolites. In particular, the examination of anaerobic microbial consortium which promotes the precipitation of different minerals and carbonate build-ups.
Emily MatysPhD Student in Geobiology
Through organic geochemical and micropaleontological analysis, I study the information preserved in sedimentary archives. As part of the Bosak lab, I continue to characterize body fossils from the Neoproterozoic interglacial period to better understand early eukaryotic radiation and possible connections with the dramatic environmental change associated with the Sturtian low-latitude glaciation.
Sharon NewmanPhD Student in Geobiology
My current research focuses on microbe-mineral interactions. I employ a variety of microscopy techniques and chemical analyses to investigate the formation of minerals around microbial filaments. My goals are to explore the mechanisms of fossilization and to determine what depositional environments are most conducive to fossilization.
Currently I am investigating how bacterial gas production and consumption vary dependent on atmospheric composition, mainly focusing on photosynthesis. The goal is to have a better estimate about how life could affect the atmosphere on an exoplanet and thereby provide better markers for detecting life in the universe.
My research interests span a range of topics including the geochemical processes that govern the Earth system as well as the origin and evolution of life. I am currently focusing on probing the formation condition of methane by analyzing methane “clumped isotope” (13CH3D) composition. In particular, I am interested in understanding how the effects of biological and non-biological processes manifest in the geochemical signatures.
Ana De Santiago TorioResearch Associate
I am passionate about microbiology. I’m currently interested in understanding how sulfate-reducing bacteria respond to variable environmental conditions, such as nutrient limitation, and how those changes affect their metabolism. Ultimately, this might give us an insight into how sediments are influenced by the microbes living in them.
Friends of the Lab
PhD Candidate, University of Cambridge.
Dr. Lilliam Casillas
Principal Investigator, Biology Department, University of Puerto Rico- Humacao.
Dr. Gill Geesey
Professor, Department of Microbiology, Montana State University
Dr. Bulent Icgen
Associate Professor, Department of Environmental Engineering, Middle East Technical University (Visiting Professor at MIT Summer ’15)
Graduate Student, Department of Marine Earth and Atmospheric Sciences, North Carolina State University
Dr. Dan Lahr
Assistant Professor, University of São Paulo, Brazil
Dr. Francis Macdonald
Associate Professor, Harvard University
Graduate Student, Department of Biochemistry, Duke University
Dr. Laura Meredith
NSF-AGS Postdoctoral Fellow, Stanford University
Dr. Kristen Miller
Postdoctoral Researcher, MIT
Dr. Sara Pruss
Associate Professor, Smith College.
Dr. Florence Schubotz
Postdoctoral Researcher, MARUM/University of Bremen
PhD student at MIT
Dr. Alexander J. Evans
Now a postdoctoral fellow at Columbia University – Lamont-Doherty Earth Observatory.
Pursuing a project to cycle the silk road: www.cyclingsilk.com
Successfully defended his Master’s thesis in geobiology!
Dr. Biqing Liang
Now at Academia Sinica in Taiwan.
Dr. Giulio Mariotti
Currently an assistant professor at Louisiana State University.
Dr. Alexander Petroff
Now a postdoctoral fellow at Rockefeller University.
Dr. Min Sub Sim
Now at Agouron Postdoctoral Fellow at California Institute of Technology.
Dr. Stefanie Templer
Currently in Emmi, Switzerland.
Dr. Shikma Zaarur
Currently in New Zealand
Dr. Andras Zsom
Dara Science Associate at Brown University (will begin January 2016).
Former undergraduate students: Joan Chen, Rachel Harris, Diana LaScala-Gruenewald, Anastasia Maheras, Deepa, Rao, Kristen Whaley, Jose-Luis Lugo (U Puerto Rico), Kevin Gildea